I get a lot of binding errors when trying to reload a docking layout. The errors, XAML and code are below and I am also sending you a complete project to support email.
The errors make no difference to UI experience but looks ugly in the debug output sometimes making debugging own issues harder due to the noise generated.
The errors make no difference to UI experience but looks ugly in the debug output sometimes making debugging own issues harder due to the noise generated.
System.Windows.Data Error: 5 : Value produced by BindingExpression is not valid for target property.; Value='<null>' BindingExpression:Path=Title; DataItem='ToolWindow' (Name=''); target element is 'ToolWindow' (Name=''); target property is 'Name' (type 'String')
System.Windows.Data Error: 5 : Value produced by BindingExpression is not valid for target property.; Value='<null>' BindingExpression:Path=Title; DataItem='ToolWindow' (Name=''); target element is 'ToolWindow' (Name=''); target property is 'Name' (type 'String')
System.Windows.Data Error: 5 : Value produced by BindingExpression is not valid for target property.; Value='<null>' BindingExpression:Path=Title; DataItem='ToolWindow' (Name=''); target element is 'ToolWindow' (Name=''); target property is 'Name' (type 'String')
System.Windows.Data Error: 5 : Value produced by BindingExpression is not valid for target property.; Value='<null>' BindingExpression:Path=Title; DataItem='ToolWindow' (Name=''); target element is 'ToolWindow' (Name=''); target property is 'Name' (type 'String')
System.Windows.Data Error: 5 : Value produced by BindingExpression is not valid for target property.; Value='<null>' BindingExpression:Path=Title; DataItem='ToolWindow' (Name=''); target element is 'ToolWindow' (Name=''); target property is 'Name' (type 'String')
System.Windows.Data Error: 5 : Value produced by BindingExpression is not valid for target property.; Value='<null>' BindingExpression:Path=Title; DataItem='ToolWindow' (Name=''); target element is 'ToolWindow' (Name=''); target property is 'Name' (type 'String')
System.Windows.Data Error: 5 : Value produced by BindingExpression is not valid for target property.; Value='<null>' BindingExpression:Path=Title; DataItem='ToolWindow' (Name=''); target element is 'ToolWindow' (Name=''); target property is 'Name' (type 'String')
System.Windows.Data Error: 5 : Value produced by BindingExpression is not valid for target property.; Value='<null>' BindingExpression:Path=Title; DataItem='ToolWindow' (Name=''); target element is 'ToolWindow' (Name=''); target property is 'Name' (type 'String')
System.Windows.Data Error: 5 : Value produced by BindingExpression is not valid for target property.; Value='<null>' BindingExpression:Path=Title; DataItem='ToolWindow' (Name='_tool'); target element is 'ToolWindow' (Name='_tool'); target property is 'Name' (type 'String')
<Window x:Class="DockingBindingErrors.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:docking="clr-namespace:ActiproSoftware.Windows.Controls.Docking;assembly=ActiproSoftware.Docking.Wpf30"
Title="Window1"
Name="_this"
Height="600"
Width="800">
<docking:DockSite x:Name="_dockSite"
CanToolWindowsRaft="False"
CanToolWindowsBecomeDocuments="False"
CanToolWindowsClose="False"
CanToolWindowsAttach="True"
CanToolWindowsDockBottom="True"
CanToolWindowsDockTop="True"
CanToolWindowsDockLeft="True"
CanToolWindowsDockRight="True">
<docking:SplitContainer>
<docking:Workspace>
<docking:TabbedMdiHost x:Name="tabbedMdiHost">
<docking:TabbedMdiContainer x:Name="_tabbedMdiContainer">
<docking:ToolWindow HasTitleBar="False"
Name="_tool">
<Button HorizontalAlignment="Left" VerticalAlignment="Top" Click="ReloadLayout_OnClick">Reload Layout</Button>
</docking:ToolWindow>
</docking:TabbedMdiContainer>
</docking:TabbedMdiHost>
</docking:Workspace>
<docking:ToolWindowContainer>
<docking:ToolWindow Title="Options 1"
x:Name="_toolOptions1">
</docking:ToolWindow>
<docking:ToolWindow Title="Options 2"
x:Name="_toolOptions2">
</docking:ToolWindow>
</docking:ToolWindowContainer>
</docking:SplitContainer>
</docking:DockSite>
</Window>
using System;
using System.Windows;
using ActiproSoftware.Windows.Controls.Docking.Serialization;
namespace DockingBindingErrors
{
/// <summary>
/// Interaction logic for Window1.xaml
/// </summary>
public partial class Window1
{
public Window1()
{
InitializeComponent();
}
private void ReloadLayout_OnClick(object sender, RoutedEventArgs e)
{
try
{
var serializer = new DockSiteLayoutSerializer();
var layout = serializer.SaveToString(_dockSite);
serializer.LoadFromString(layout, _dockSite);
}
catch (Exception exception)
{
MessageBox.Show(exception.ToString());
}
}
}
}
